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85 lines
2.0 KiB
85 lines
2.0 KiB
libtraceevent(3) |
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================ |
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NAME |
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---- |
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tep_strerror - Returns a string describing regular errno and tep error number. |
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SYNOPSIS |
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-------- |
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[verse] |
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-- |
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*#include <event-parse.h>* |
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int *tep_strerror*(struct tep_handle pass:[*]_tep_, enum tep_errno _errnum_, char pass:[*]_buf_, size_t _buflen_); |
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-- |
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DESCRIPTION |
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----------- |
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The _tep_strerror()_ function converts tep error number into a human |
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readable string. |
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The _tep_ argument is trace event parser context. The _errnum_ is a regular |
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errno, defined in errno.h, or a tep error number. The string, describing this |
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error number is copied in the _buf_ argument. The _buflen_ argument is |
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the size of the _buf_. |
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It as a thread safe wrapper around strerror_r(). The library function has two |
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different behaviors - POSIX and GNU specific. The _tep_strerror()_ API always |
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behaves as the POSIX version - the error string is copied in the user supplied |
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buffer. |
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RETURN VALUE |
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------------ |
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The _tep_strerror()_ function returns 0, if a valid _errnum_ is passed and the |
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string is copied into _buf_. If _errnum_ is not a valid error number, |
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-1 is returned and _buf_ is not modified. |
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EXAMPLE |
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------- |
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[source,c] |
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-- |
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#include <event-parse.h> |
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... |
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struct tep_handle *tep = tep_alloc(); |
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... |
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char buf[32]; |
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char *pool = calloc(1, 128); |
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if (tep == NULL) { |
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tep_strerror(tep, TEP_ERRNO__MEM_ALLOC_FAILED, buf, 32); |
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printf ("The pool is not initialized, %s", buf); |
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} |
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... |
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-- |
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FILES |
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----- |
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[verse] |
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-- |
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*event-parse.h* |
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Header file to include in order to have access to the library APIs. |
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*-ltraceevent* |
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Linker switch to add when building a program that uses the library. |
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-- |
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SEE ALSO |
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-------- |
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_libtraceevent(3)_, _trace-cmd(1)_ |
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AUTHOR |
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------ |
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[verse] |
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-- |
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*Steven Rostedt* <[email protected]>, author of *libtraceevent*. |
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*Tzvetomir Stoyanov* <[email protected]>, author of this man page. |
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-- |
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REPORTING BUGS |
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-------------- |
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Report bugs to <[email protected]> |
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LICENSE |
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------- |
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libtraceevent is Free Software licensed under the GNU LGPL 2.1 |
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RESOURCES |
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--------- |
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https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
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